I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I have branches, but no fruit, trunk or leaves. What am I?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

What Time Should the last watch show in the below figure?

If eleven plus two equals one, what does nine plus five equal?

What occurs twice in a week, once in a year but never in a day?

Find the 8 in the below-given Image.